81. Carbon dioxide assimilation by green sulphur bacteria requires the presence of which of the following as a hydrogen source?
82. Which one of the following agents does not contribute to propagation of plants through seed dispersal?
83. The visible spectrum ranges from
84. The largest single contribution of CO2 is made by
85. Which of the following enzymes is mainly responsible for reduction of molecular nitrogen?
86. When the chloroplast pigments absorb light
87. Match List-I (Diseases) with List-II (Causative agents) and select the correct answer:
List-I
List-II
a. Covered smut of Barley
1. Alternaria solani
b. Early blight of Potato
2. Ustilago hordei
c. Red rot of Sugarcane
3. Xanthomonas citri
d. Citrus canker
4. Colletotrichum falcatum
| List-I | List-II |
| a. Covered smut of Barley | 1. Alternaria solani |
| b. Early blight of Potato | 2. Ustilago hordei |
| c. Red rot of Sugarcane | 3. Xanthomonas citri |
| d. Citrus canker | 4. Colletotrichum falcatum |
88. Many species of plants are capable to survive and grow in low light intensity which are known as
89. In black rust of wheat, the fine, hair-like hyphal threads seen interspersed between the periphyses that extend through the ostiole and project much beyond the periphyses are known as
90. Which of the following normally occurs in radioactive fallout, has a half-life of 28 years and behaves like calcium in biogeochemical cycles?
Read More Section(Plant Anatomy and Physiology)
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- Plant Anatomy and Physiology - Section 1
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- Plant Anatomy and Physiology - Section 3
- Plant Anatomy and Physiology - Section 4
- Plant Anatomy and Physiology - Section 5
- Plant Anatomy and Physiology - Section 7
- Plant Anatomy and Physiology - Section 8
- Plant Anatomy and Physiology - Section 9
- Plant Anatomy and Physiology - Section 10